Grain-car door.



W. G. DOUGLAS & W. ROBINSON.

GRAIN GAR DOOR.

APPLICATION FILED JUNE 22, 1908.

927,335. Patented July 6,1909. 2 SHEETS-SHEET 1.

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n W. G. DOUGLAS & W. ROBINSON.

GRAIN GAR DOOR.

APPLICATION FILED JUNE 22, 19,08.

Patented July 6, 1909. 2 SEEBTS-SHEET 2 wag 71% WITNESSES fif m- UNITED srArr s n rnnrr OFFICE.

WILLIAM GRIG'G- DOUGLAS, OF WINNIPEG, AND WILLIAM ROBINSON, OF SELKIRK, MANITOBA,

CANADA.

GRAIN-CAR DOOR.

Patented July 6, 1909.

Serial No. 439,838.

To all whom it may concern:

Be it known that we, NILLIM I GRIGG DOUGLAS, of the city of Ninnipeg, in the Province of Manitoba, and WILLIAM ROBIN- soN, of the town of Selkirk, in the Province of Manitoba, Canada, have invented certain new and useful Improvements in Grain-Car Doors, of which the following is the specification.

Our invention relates to grain car doors, and the object of the invention is to provide a strong, serviceable, and inexpensive door, by which grain, coal, and such like produce can be quickly unloaded from the car and which will not allow of leakage of the grain when in position.

A further object is to provide a grain door in the construction of which the usual form of rectangular doors at present so widely employed. can be utilized.

It consists essentially in a door formed. from two similar members of the same height, which when in. position overlap the one on the other; means carried by the door post for receiving the ends of the door; means for retaining the members in closed position when the car is empty or loaded; and. means for preventing upward displacement of the door, the parts being arranged and constructed as hereinafter more particw larly d cscribed.

Figure 1 is a side elevation of a portion of a car showing the door way opening, supplied with. our door. Fig. 2 is a side elevation of the door in position, and looking at it from the interior of the car. Fig. 3 is a sectional view through the walls of the car in the plane denoted by the line X X, Fig. 1, and looking downwardly on the door, the door being closed. Fig. 4 is a similar view to that shown in Fig. 3, the door being shown in the position which it assumes immediately prior to releasing the grain. Fig. 5 is an enlarged detailed. perspective view of a portion of one of the door posts showing a portion of one of the members of the door and the manner in which it is retained in position against the door post. Fig. 6 is an enlarged detailed perspective view of the other of the door posts showing a portion of both members of the door and the means employed for securing the inner member in closed position when the car is empty. Fig. 7 is a side elevation of a portion of one of the door posts showing the latch employed for retaining the door in closed position when the ca is loaded. 8 is a vertical section taken through the center of Fig. 7.

In the drawings like characters of refer ence indicate corresponding parts in each figure.

1. and 2 are the ordinary door posts of a car of which 3 is the upper cross beam and 4. the door sill, such portions boundii'ig the doorway opening 5.

6 is the roof of the car and 7 are the face boards to the side of the door posts.

8 is the door plate firmly secured. to the door sill and passing between the door posts.

9 and 1.0 are a set of similar vertically extending wooden. bars secured firmly to the door post by means of bolts 11. Each of these latter bars have one of their corners cut away forming with the adjoining door post V or wedge-shaped channels 12 and 13.

14; and 1.5 are metallic plates securely fastoned to the bars 9 and 10 by the bolts 11, already referred to. The purpose of these plates is to prevent any possibility of the doors being nailed to the door posts.

The door 16 is formed from inner and outer similar members 17 and 18, both of such members being of the usual height employed in grain doors, and. of a length somewhat greater than the doorway opening.

19 and 20 are cross reinforcing strips scoured to the inner member 17, and the strip 20 being at one extreme end of the member and on the inner side, and the strip 19 somewhat back from its other end.

21 and 22 are reinforcing cross strips secured to the outer face of the member 12 of the door, the strip 21 being fastened to the extreme end of the member and the strip 22 being secured near the opposite end. somewhat back from such end. The cross strips 20 and 21 in this wise appear at the opposite ends of the door immediately to the sides of the door posts. One end of each member is adapted to pass within the V-shaped channels 12 and 13, the other or free ends overlapping. and being just clear of the door posts.

23 and 2e are bolts passing through the plates 14 and 15 across the V-shaped channels and into the door posts. The bolts are located toward the upper end of the plates and serve the purpose of preventing the door from having any upward play when in position. This is accomplished. by cutting away one of the upper corners of each member of the door, 25, so that the ends of the members pa under and eng go when l position, with the hollis.

26 and 27 are plates fastened to the door immediately to the side of the door plate, their nirpose being to keep the lower edge of the inner member of the door at the same level as the outer member of the door which rests on the door plate.

.28 is a button pivotally secured to the plate 15, such butt-on being designed to retain the inner ineniher e the door in the closed position when the car is empty are siinilar latches pivotall supported by pins 80 vrhich are carried by plates 31 securely Fastened n'itl'iin a recess formed on the inner face of the door post 1. The door post is also recessed at 32- and the recess 32 forming a housing for the latch "when in the upper position, and the recess 33 allowing the latch to pass downwardly (in the direction of the arrow, Fig. 8) to the alternate po sition, slunvn d )tted lines. It Will he noticed that pass through the the pins I latches SOHlOWliitt to the side of the center, and. that the latches have their edges extending slightlyheyond the plane of the door post. The purpose of this is to allow the latch to he rcadi' thrim'i'i downwardly.

In order to lt-ette understand the operation of the door we till now describe the manner in which it is placed in position; (hie end of the nicniher 7 is placeiilWithin the channel 1 and the opposite end of the incinher 18 is passed within the channel 13, the incinhe 's in this position overlapping for practi ially the lull iiidth of the doorway. The latches 29 are thrown to the position shown in dotted outline in Fig. 5%, and in this position it is required that the cross brace 21 rest against the latches. if the car he tilled with gn'tin it is unnccessar to throw the hutton 2e to the position shown in. Fig. 6, as the pressure of the grain prevents the inner member from swingin inwardly. ii hen the car is unloaded or empty the button is required, as is obvious, to prevent the inner section from passing out of position. To open the door when the car is loaded it is only necessary to force the latches to their upper position. In'nnediateh; this is done the tree end of the member 18 is pulled outwardly till it assumes the position she, n in Fig. 4-, when it can he readil removed hy pulling it lrmgitudinally, or pressing down. 'ardly on the door sill. As soon as it is released the inner ineinher is forced outwardly With the grain.

#Vllftl) y 'e claim as our invention is:

l A grain car door formed from inner and outer disconnected and overlapping sections, each section having one of its ends adapted to abut against the sides of the door posts. both of such members being in length greater than the Width of the doorway opening, in coinhinaticn with a set of releasable latches housed. Within openings provided Within. the door post, adjacent to the free end of the outer member as and for the purpose specified.

2. A grain car door formed from inner and outerdisconnected and overlapping sections, each section. having one of its edges adapted to lit in i -shaved grooves formed at the side of the door posts, in combination with a set of releasable latches housed within the door post adjacen to the free end of the outer section, such latches being adapted to retain the inenihcr in closed position as and for the purpose specified.

3. A grain car deo r, formed from inner and outer disconnected and overlapping sections, each section having one of its ends adapted. to abut against the sides of the car door pests, in cm ihination with retaining means for holding the members in closed position, and including a plurality of latches pivotally interconnected with supporting plates, such latches and plates being fitted Within recesses formed in the door post adjacent the free end of the outer member of the door asand for the purpose specified.

i. In a device of the class described the coinl'iinatien with the deer posts having grooves formed to the inner side thereof, and the grain door l'erncd from a plurality of disconnected and overlapping sections, each section having a portion of one of its upper :crners cut away, of a holt passing across each ol the grooves against which the cut away portion ol the respective incinhers is adapted to engage, and for the purpose specified. 7 V

in a dedce oi' the class described, the combination with the door posts having J- shaped groc ves formed at the sides thereof, and a 'ain deer fru'rned from inner and outer overlapping and disconnected sections, each section having one of its ends adapted to abut against the sides of one of the door posts, of a button pivotally secured to one of the grooved ineinhers and adapted to pass outwardly over the inner face of the free end el' the inner incniher of the door as and for the purpose specified.

Signed at Winnipeg in the Province of Manitoha, this 13th day of June, 1908.

"NILLLKM GRIGG DOUGLAS. XYILLIAM ROBIN SON.

In the presence of JAs. M. 'iAPLEY,

GERALD S. itoxuunen. 

